Malicious PDF — malware analysis report

Static analysis result for SHA-256 fce526655bdb7800…

MALICIOUS

PDF

79.7 KB Created: 2021-05-25 19:20:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: f48228c7468fc3cb970e8da9b624015e SHA-1: 7284c214499f3da79b9d4ca245234b03d64cfb80 SHA-256: fce526655bdb7800f1ef1cbf853de3db2e2a36ab6cf14f2b287e814da6a054ee
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://kuzutuzo.ru/strik?utm_term=como+descargar+e+instalar+geometry+dash+2.2+para+pc PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4412394/normal_6059ac19892f1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464722/normal_60037b5223757.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469136/normal_5ff88d2489d16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415308/normal_5fe9a03c76c9f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382208/normal_6047621333829.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385422/normal_605017bab0c63.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450517/normal_5ff5e55d975fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444092/normal_603d17e290f38.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427793/normal_60584fc3853a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371495/normal_601326309aa7e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377388/normal_603ececd95012.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402519/normal_6019115d62b46.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409417/normal_605efadfc1d49.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471256/normal_6055f04f6861f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/xumakomowi/kenmore_elite_gas_dryer_repair_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/20th_century_harmony_review.pdfIn PDF document text
    • https://s3.amazonaws.com/nonipesikiri/65137370694.pdfIn PDF document text
    • https://s3.amazonaws.com/fajujiju/what_if_a_judge_is_biased.pdfIn PDF document text
    • https://s3.amazonaws.com/wolina/scientific_facts_in_the_bible.pdfIn PDF document text
    • https://s3.amazonaws.com/zetituri/newly_diagnosed_type_2_diabetes_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/bawalidamovidud/ipcc_report_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/firudegix/89306693771.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e78d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE78D 5564 bytes
SHA-256: d3a5696c8071ca8fdb2c5792fb501afeb33d3b7779ede58caf93e863773383a6
font_01_sfnt_off0000fa52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA52 11772 bytes
SHA-256: 434861003c790af71341a9cf116fbf29e230fccffb781ce7c7ffabfae3be9bb6
font_02_sfnt_off000120e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120E0 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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